Siemens | HE43B050 | Circuit Breaker | 50A | 3-Pole | 480V | 25kA | Bolt-On

When your industrial panel demands robust, reliable overcurrent protection, the Siemens HE43B050 bolt-on circuit breaker is built to perform. This 50A, 3-pole device safeguards 480V systems with a formidable 25kA interrupting rating, delivering fast, clean shutdowns across all phases to protect motors, feeders, and control circuits in demanding environments.

Key specifications

• Amperage: 50A
• Poles: 3-Pole
• Voltage rating: 480V
• Interrupting capacity: 25kA
• Mounting: Bolt-On
• Part number: HE43B050

Why this Siemens HE43B050 stands out

• Bolt-On reliability: The bolt-on mounting provides secure, vibration-resistant installation in compatible Siemens panels, reducing panel modification time during retrofits or replacements.
• Three-pole protection for balanced quiescence: With three independent poles, it ensures simultaneous disconnection of all phases, minimizing the risk of unbalanced faults and protecting connected motors and equipment.
• High fault current handling: A 25kA interrupting rating means this breaker can safely interrupt substantial fault currents typical in industrial environments, helping to prevent collateral damage.
• Prime reference for compatibility: The HE43B050 is designed for maintenance, retrofit, and replacement work where matching specifications are essential—use the part number as your best compatibility reference.

Ideal use cases

• Retrofits and panel upgrades in manufacturing lines that utilize 480V three-phase equipment
• Replacement for aging or failed breakers in motor control centers and distribution panels
• New or upgraded feeder protection for industrial machinery, pumps, and conveyors that require precise 50A protection

Installation tips and compatibility notes

• Always confirm fit and ratings before ordering. The part number HE43B050 is the most reliable reference for compatibility with Siemens assemblies.
• Ensure the host panel supports bolt-on mounting and 3-pole protection at 480V.
• Plan for synchronized switching across all three phases to preserve equipment lifetimes and reduce inrush-related stress on drives and motors.

Equip your Siemens-compatible protection lineup with the HE43B050 to deliver dependable, high-capacity protection where it matters most. If your system runs on 480V three-phase power and requires a sturdy 50A, 3-pole bolt-on breaker capable of withstanding substantial fault currents, this device is engineered to perform—and endure.